I just mananged to fix it.
I went into each custom template I created for pages 5.1,5.2,5.3 and after “get header” there is a div id=”primary” class=”site-content”
so I added custom classes for (site-content-page5.1) and in style.css added .site-content-page5.1{width:100%}.
So now i have .site-content{width:70%} so blog(page4) diplays well – sidebar up on the right side.
And the pages 5.1, 5.2, 5.3 have custom width class of 100% displaying good also.
Hope this helps anyone interested into changing site-content for specific pages.
